OTHER INCOME (EXPENSE) NET (Details) - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
OTHER INCOME (EXPENSE) NET
Foreign exchange gain (loss)	$ (3)	$ 32	$ (111)
Other income (expense), net		(2)	(51)
Other income (expense), net	$ (3)	$ 30	$ (162)